adding editors.dart
merging in CLs; added auto-saving
More work on ObjectStore.
Add dummy test git repository.

Add dummy test for objectstore.
Add writeObjecrt method in objectstore.
Add writeTree method to objectstore.
add tracking for actions and uncaught exceptions
cleaning up todos
Cleanup objectstore test.
fixed change tracking issue; added tests
ace nit
Merge branch 'master' into analytics3
Merge branch 'master' into analytics3
cleanup, and add a TODO: about zone investigations
bug fix to new session code
address review comments
Merge branch 'master' into editor-switching2
review comments
Merge branch 'master' into analytics3
Merge pull request #210 from dart-lang/analytics3

Analytics3